Method and device for cleaning railtrack grooves

ABSTRACT

A groove cleaning unit has a high pressure jet nozzle from which a cleaning liquid impinges in a high pressure jet stream inclined downwardly onto a cleaning surface and is covered by a covering screen. An exit opening for the dirt liquid mixture is placed in the cover screen. The cover screen ( 5 ) covers a piece of a railtrack ( 17 ) with a railtrack groove ( 3 ). A high pressure jet nozzle ( 1 ) is placed in the region of a front wall ( 8 ) on the jet stream side. A high pressure liquid jet stream ( 2 ) is directed onto an impingement location ( 4 ) in the railtrack groove ( 3 ) by the high pressure jet nozzle ( 1 ). A reflected liquid jet stream ( 11 ) of the high pressure liquid jet stream ( 2 ) is reflected under an angle. The angle is steeper as compared to the inclination of a lower screen wall ( 7 ) disposed inclined relative to a travel advance direction ( 19 ) and is rising forwardly. The reflected liquid jet stream ( 11 ) passes essentially immediately to an exit opening ( 18 ).

BACKGROUND OF THE INVENTION 1. Field of the Invention

The invention relates to a method for the cleaning of rail grooves, inparticular of railroad and tramway railtracks and to the devicetherefore, according to the preamble of the first method claim and ofthe first apparatus claim.

According to the known methods for the cleaning of railtrack groovescleaning is performed with mechanical means, such as scratching chisel,wire brush and the like which leads to an insufficient cleaning effector to a stripping at the railtrack grooves and to a difficult, in mostcases insufficient, removal of the dirt layer, because the chisel sizehas to be adapted to different sizes of the rail grooves, the cleaningcannot be performed to the base of the grooves because of the waterdischarge openings in the rail grooves, whereby the method is associatedwith a small cleaning effect.

During the following separation and disposal of the carried out dirt,where the transport with a suctioned stream of air is expensive becausethe effective difference pressure cannot exceed one by and is also veryenergy expensive because of the large required volumes of air andnevertheless only a slight cleaning and thus only a small travel speedof a carrier vehicle is achievable relative to the high energyexpenditure.

The stripped dirt is very abrasive and acts very corroding, whereby thesuction device including the complicated constructed filter plant issubjected to heavy loading and requires the use of expensive materialsand requires high maintenance costs in order to maintain the completesuction plant always sealed for vacuum.

In addition water jet streams are employed for street cleaning, whichrequires large volumes of water, which causes the flushing in of dirt,which frequently contains split or other flat waste parts such as foils,tissues or the like into the drainage channels of the railtrack grooves,which dirt then can cause stoppages there.

The cleaning with a high pressure jet stream of water or cleaningsolution has been performed for cleaning of traffic areas, wherein thejet stream was placed onto a traffic area to be cleaned and the washedaway dirt water mixture was then sucked off by a suction device from thesurface to be cleaned and was discarded.

The directional accuracy of the high pressure jet stream does not haveto be particularly high in this context and the high pressure jet streamdoes not have to be precisely adjusted and the case of an uncontrolledflowing off of the dirt water mixture carries little importance for thequality of the cleaning. The disadvantages of the suctioning off howeverare similar to those already described, wherein the wet dirt filtrationtakes the place of the dry dirt filtration.

SUMMARY OF THE INVENTION

1. Purposes of the Invention

It is an object of the present invention to furnish an improved methodand a device, which aimingly and down to base ground accomplish in areliable fashion specially the cleaning of the railtrack grooves ofrailroad and tramway railtracks while avoiding the describeddisadvantages with at least sufficient travel speed of the cleaning unitand under catching of the removed, in particular flushed out, dirt.

This object is obtained in connection with the method and the apparatusfor performing the method with the features of the characterizing partof the method claim and of the first apparatus claim.

These claims and the subclaims form also simultaneously a part of thedescription of the invention.

2. Brief Description of the Invention

The method allows cleaning of a railtrack groove from a layer of dirt upto the base ground and to remove the layer of dirt also from the sidefaces of a railtrack grooves, wherein the dirt layer, in particular incase of a hydro-dynamic impact, is infiltrated by the cleaning fluidbased on the high pressure of the cleaning fluid and the dirt layer isripped to pieces and entrained quickly and explosion like by penetrationinto hairline cracks and capillary chinks.

In this context a gaseous, vaporous, or liquid cleaning fluid ormixtures thereof or solutions can be employed, wherein liquids, inparticular water containing mixtures are preferred.

A movable wall formed of rubber plates or the like can serve as acollection device, which leads to a suctioning as a guide device.

The supporting disposal of the used fluid together with the dirt bysuctioning off is subject to the initially recited loads, neverthelessis possible, for example for the retooling of existing carrier vehicles.

The transport of the abraded dirt is performed by the kinetic energycontained in the fluid jet streams reflected from the strippinglocation, wherein the kinetic energy is hurled over a distance leadingaway upwardly from the railtrack surface into a collection trough,wherein the dirt fluid mixture is transported by a conveyor ofconventional construction into a dirt container from the collectiontrough.

The application of a guide face for the dirt fluid mixture deflectedfrom the impact and stripping location and disposed under favorableangle relative to the deflected dirt fluid mixture, results in a simpleinterference insensitive transfer device to collection trough.

The application of suitable materials is advantageous for improving thewettability, wherein cleaning speed can be increased with thesematerials.

The selection of the high pressure to be applied depends in addition tothe distance between the high pressure jet nozzle and the impactlocation also on the form of the jet stream and on which region at arailtrack groove is to be captured simultaneously by the jet stream,this means also how far the jet stream can be spread apart, as well asaccording to the qualities, the holding together and the layer depth ofthe present dirt.

Similar considerations hold for the alignment of the high pressure fluidjet stream, with its inclination in the direction of travel and alsoperpendicular thereto, which alignment influences stripping of the dirtand therefore has to be accessible to an adjustment based on a change inposition of the employed high pressure jet nozzle in its alignment,directly or through control devices if required in case of stronglyvarying properties of the dirt.

Based on the aiming application of a liquid high pressure fluid jetstream, the intended effect and the transport is accomplished with smallpressure fluid volumes, whereby also the flushing in of dirt into thedrainage boxes of the railtrack grooves is avoided and no large amountsof soiled fluid, usually water are generated, which have to bedischarged. The amounts can be discharged for example in case of lawnrailtracks between these railtracks or on the side of these railtracks,similarly like dirt composed of biomass and ground mass, such that forthe disposal only the dirt remains generated in the road region, whichbecomes possible for example by storage for example in aninterchangeable container, which serves as a dirt container.

It is an important advantage of the methods and of the applied device tofurnish a wet treatment of the dirt, by way of which the dustdevelopment is suppressed by depositing in the fog droplets of the highpressure fluid jet stream, without that a separate expensive segregationand deposition would prove necessary.

The high pressure fluid jet stream has to be directed fairly preciselyto the position to be cleaned during the cleaning of the railtrackgrooves, an advantageous shape of the jet stream has to be produced, anda suitable region of the impact angle has to be maintained in order toachieve a quick and good effect.

The dirt water mixture possibly still running off on the railtrack canexit substantially without further cleaning or also can be received by asuction device in order to keep the soiling of surroundings and groundas low as possible, wherein a small and little expensive apparatus issufficient.

For increasing in the capabilities and power of the cleaning, severalgroove cleaning units can be disposed successively on a carrier vehiclefor each rail, whereby the cleaning and a thus traveling speed canapproach the usual train transport speeds.

It is particularly advantageous to provide a planar formation of thelower screen wall of the groove cleaning unit and to have the start atthe railtrack surface at a distance from the impingement location of thehigh pressure fluid jet stream, which distance is at least equal to orsomewhat larger as compared to the flushing width of the rail grooves,such that larger volumes of cleaning fluid cannot exit through and underthe groove sealing of the screen wall.

It is important for good sideways covering that the side walls reachdown up to the surfaces of the railtrack and the leading edge and end insealing beams, which sealing beams are disposed advantageously restingback at least one surface and sealing beams delimit on the sidesflushing opening for the railtrack grooves and sealing beams extend overthe length of the opening in order to prevent the exit in particular ofhard parts and of liquid.

The application of massive steel plate of larger thickness is necessaryfor this purpose because of the substantial abrasion, which can improvethe sealing relative to the surface of the railtrack or, respectively,of the guiding face with a planar lower sealing face or increases thesealing pressure with a bomb shaped lower sealing face and therebyfavorably forms the sealing interface.

A height level shiftable support of the sealing beams is useful for theheight level of heavily varying surfaces, however the arrangementthereby becomes more subject to interferences under the heavy load.

A further improvement of the sealing with a sliding sealing beam, thatis in particular on the surface of the railtrack, is achieved byapplication of a fluid under pressure, wherein air is particularlyadvantageous, wherein the air exits from openings disposed at the lowerface for generation of a cushion.

A very effective, durable and lasting, and simple seal is achieved onthe side of the leading edge by disposing a brush of sufficient lengthand with a wear resistant construction at the side wall of the coveringin a brush support, wherein the brush extends over the length of thesealing beam at the outer edge of the leading edge. Simultaneously, alimitation of excessive growth of weeds at the leading edge is achieved.

The composition of the bristles, in particular made of wear resistantplastic, and also the mixed applications together with metal bristles,row by row alternating or also only made of metal bristles isadvantageous depending on the application situation.

The application of a groove sealing, which reaches between the sidewalls of the railtrack groove up to the dirt layer or to the floor ofthe grooves, is of particular advantage in case of frequently cleanedgrooves for the sealing against te dirt fluid mixture or for thesubstantial minimizing of the dirt fluid mixture passing through underthe edge of the lower screen wall, or cleaned the screen wall and to thedirt layer in the railtrack grooves, while otherwise the dirt layeritself becomes effective as a seal toward the front.

The application of a groove covering, reaching from the edge of thescreen wall at the railtrack surface in the travel direction reachingforwardly serves the same purpose, wherein the length of the groovecovering is determined by the height level of the dirt layer depositedin the railtrack groove.

A particularly good cleaning back can be obtained in the region of theside wall of the railtrack groove, for example of the travel edge, canbe achieved with a cross inclination of the high pressure fluid jetstream and is direct toward the side wall of the railtrack groove incase of heavily soiled side walls of the railtrack groove.

An effective cleaning of drainage openings up to the ground is madepossible in addition by the high pressure fluid jet stream.

The spent cleaning fluid, from which the dirt has deposited up to thefinest particles, can be already derived from the collection trough ofthe transport device on the railtrack space cleaned and next to therailtracks, in particular in case of long railtracks, similar like thetop standing fluid from the dirt container, while the fluid volumegenerated during the passing over of the tramway railtracks is stored ina container and delivered for proper disposal.

The disposition of the groove cleaning unit at a small distance relativeto wheel sets running in front of and behind or the disposition of guidewheels running in the preceding groove and there behind results in aparticularly good guiding the groove, in particular in case of a curvedtrack.

The disposition of a bucket chain in the mode of application protectedis of advantage for running off the dirt water mixture, whicharrangement of a bucket chain is associated with a high degree ofeffectiveness and which can be led upwardly on the outside close to thewall of the vehicle and which allows a simple transfer into a high levelcollection container.

It is advantageous to attach a magnetic collection device, known inprinciple, in front of each railtrack groove cleaning unit for thecollection and removal of steel residues, in particular ships, of therailtrack and rails and other sources.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described by way of a schematic drawing of anembodiment of the apparatus.

There is shown in:

FIG. 1 the device in a schematic longitudinal section;

FIG. 2 the device according to FIG. 1 in a cross-sectional view;

FIG. 3 to section with the sealing beam in FIG. 2 with fluid flushing.

DESCRIPTION OF INVENTION AND PREFERRED EMBODIMENT

A cover screen 5 of the groove cleaning unit is disposed on a railtrack17 with incorporated rail groove 3, wherein the rail groove 3 grips overthe rail groove on two sides at a small distance, wherein the groovecleaning unit is guided in this working position by the support of acarrier vehicle not illustrated, for example with guide wheels runningahead and/or behind.

The cover screen 5 comprises side walls 13, a front wall 8, a lowerscreen wall 7 also disposed on the front side, and an upper screen wall6.

A high pressure jet nozzle is disposed in the region of the jet streamside front wall 8 at a distance above the railtrack 17, wherein the highpressure fluid jet stream 2 of the high pressure jet nozzle 1,comprising water as a cleaning fluid, is disposed flying in traveladvance direction 19 forwardly and downward, about under 60 angledegrees relative surface of the railtrack and wherein the high pressurefluid jet stream 2 impinges the floor of the railtrack groove 3 at theimpingement location 4 of the railtrack groove 3.

The dirt stripped by the high pressure fluid jet stream 2 from the dirtlayer 12 in the railtrack groove 3 is carried along by the flowing ofreflected fluid jet stream 11 under a flatter angle relative to thesurface of the railtrack.

The dirt fluid mixture is hurled by the kinetic energy contained in thefluid jet stream primarily against the lower planar formed screen wall7, which screen wall 7 is disposed under a steeper angle as compared tothe angle under which the reflected fluid jet streams impinge and thedirt fluid mixture is led upwardly at the screen wall 7 until the dirtfluid mixture exits through an exit opening 18.

This exit opening 18 is left free by the discharge channel 20 exhibitingat most about the width of the railtrack 17 and formed by the lowerscreen wall 7, the two side walls 13 and the upper screen wall 6,wherein the fluid jet streams or, respectively, the dirt fluid mixturepasses through the discharge channel 20 into a collection trough 15,wherein the fluid jet streams or, respectively the dirt fluid mixtureare either stored in the collection trough 15 and later on discharged orsubjected further treatment.

A part of the used cleaning fluid separates in the collection trough 15during further treatment and then streams through an overflow and is ledeither directly between and/or next to the railtracks or is led toanother storage container not illustrated.

The remaining part of the dirt fluid mixture is fed by a transportdevice of conventional construction only indicated, for example anArchimedean spiral or conveyor belt or a bucket chain or the like into acollection container a further separation and discharge of fluid anddirt.

The lower screen wall 7 ends at the bottom in a planar edge 21, whereina groove seal 9 can be placed at the planar edge 21, wherein the grooveseal 9 can be either hinged or elastic, made of rubber or the like,wherein the groove seal 9 reaches in the rail groove 3 up to the dirtdeposit 12 and seals against passage of the scouring fluid jet stream.

A groove cover 10 is disposed on the rail groove 3 over a multiple ofthe depth of the rail groove 3 starting at the edge 21 of the lowerscreen wall 7 and running forwardly in travel direction 19, wherein thegroove covering 10 covers the surface of the railtrack 17 and sealsadditionally against passage of the flushing jet stream under the grooveseal.

The covering screen 5 is illustrated in cross-section and at a rightangle relative to the travel direction 19 in FIG. 2.

The bristles 29 of the sealing brush 27 exhibit at least five times thelength of the maximum permissible height level distance between thesurfaces 22 and 24 of the railtrack 17 and of the leading edge 23 andcomprise for example wear resistant plastic, which bristles 29 can bearranged forming alternating rows with metal wire bristles.

The bristles 29 scrub over the outer edge 32 of the leading edge andrest at the outside of the sealing beam 26 from below.

An air flushing is reproduced in FIG. 3 for the sealing beam 25 led withthe lower planar sealing face 33 of the vehicle always at a very narrowdistance or resting on the surface 22 of the railtrack 17. One orseveral longitudinal slots 31 disposed successively or bore holes openedup to the lower sealing face 33 reach from a longitudinal bore 30 in thesealing beam 25, wherein the air exits with a pressure of from one to 10bar at the lower sealing face 33, and wherein the penetration of dirtbetween the sealing face 33 and the surface 22 of the rail 17 isprevented and thereby the surface 22 of the rail 17 is maintained clean.

What is claimed as new and desired to be protected by Letters Patent isset forth in the appended claims.

What is claimed is:
 1. A method for cleaning of railtrack grooves,during travel with a cleaning unit attached to a carrier vehicle, anddisposed in an essentially fixed position relative railtrack groove,disposing a sealing beam (25) resting on a surface (22) of a railtrack(17) and essentially laying on the surface (22); wherein a high pressureaqeous liquid jet stream (2) of a cold or heated aqueous cleaning liquidis directed at a dirt layer (12) in the railtrack groove (3) to beprocessed by a groove cleaning unit, wherein a reflected liquid jetstream (11) of the high pressure aqueous liquid jet stream (2) reflectedby a respective impact location (4) entrains the dirt and a dirt liquidmixture fed from a collection device and from a guide device to atransport apparatus, wherein the dirt liquid mixture is guided into adirt collection device and stored or spent liquid is at least partiallyseparated from the dirt in the dirt collection device or in a separateseparation device or the dirt liquid mixture is directly carried out. 2.The method for cleaning of railtrack grooves, according to claim 1,wherein the high pressure aqueous liquid jet stream (2) directed towardthe dirt layer (12) in the railtrack groove (3) to be processed by thegroove cleaning unit is arranged with an impingement angle relative tothe railtrack surface of from between 30 and 80 angular degrees relativeto the surface of the railtrack (17), depending on the kind of the highpressure aqueous liquid jet stream (2), on the dirt in the dirt layer(12) of railtrack grooves (3) and on a travel speed.
 3. The method forcleaning of rail grooves according to claim 1, wherein the high pressureaqueous liquid jet stream (2) directed by a groove cleaning unit ontothe dirt deposit (12) in the railtrack groove (3) to be processed isarranged with an impingement angle relative to the railtrack surface,perpendicular to a travel direction (19) of the carrier vehicle and thusessentially perpendicular to the longitudinal direction of the railtrackgroove (3), of between 90 and 30 angular degrees relative to the surfaceof the railtrack (17), directed against a side wall of the railtrackgroove (3), depending on the kind of the high pressure aqueous liquidjet stream (2), of the dirt in the dirt deposits (12) of the railtrackgroove (3).
 4. The method for cleaning of railtrack grooves according toclaim 1 wherein the high pressure aqueous liquid jet stream (2), formedas a forwardly and downwardly inclined jet stream in travel direction(19), in particular as a flat jet stream directed in particularperpendicular to the railtrack groove (3) is directed to a dirt deposit(12) in the railtrack groove (3) and an aqueous liquid jet streamreflected under an acute angle upwardly impinges on the guide face (7)and is deflected along the guide space (7) forwardly and upwardly. 5.The method for cleaning of railtrack grooves, according to claim 1,wherein reflected aqueous liquid jet streams (11) of the high pressureaqueous liquid jet stream (2) of a cleaning liquid, in particular wateror aqueous cleaning solution, directed by the groove cleaning unit ontoa dirt deposit (12) in the railtrack groove (3) to be processed, entraindirt from the respective impingement locations (4) and transport thedirt over a guide surface at an inclined angle upwardly and arecollected in a collection device together with the dirt, wherein inparticular at least the overwhelming part of the solid parts and of afluid content are directly carried out or are led with a transportdevice (14) into a dirt collection device.
 6. The method for cleaning ofrailtrack grooves according to claim 1, wherein a material fordecreasing of the surface tension is added to the cleaning fluid of thehigh pressure fluid jet stream (2).
 7. The method for cleaning ofrailtrack grooves according to claim 1 wherein the cleaning liquid ofthe high pressure aqueous liquid jet stream (2) is splashed onto thedirt deposit (12) with a working pressure of between 10 bar and 2500 bardepending on the kind of the cleaning liquid, of the dirt deposit (12)and the jet stream expansion required and occurring during the cleaning.8. A groove cleaning unit with a high pressure jet nozzle from which acleaning liquid impinges in a high pressure jet stream inclineddownwardly onto a cleaning surface and is covered by a covering screen,wherein an exit opening for the dirt liquid mixture is placed in thecover screen, wherein the cover screen (5) covers a piece of a railtrack(17) with a railtrack groove (3), a sealing beam (25) resting on asurface (22) of a railtack (17) and essentially laying on the surface(22), wherein a high pressure jet nozzle (1) is placed in the region ofa front wall (8) on the jet stream side, wherein a high pressure liquidjet stream (2) is directed onto an impingement location (4) in therailtrack groove (3) by the high pressure jet nozzle (1), wherein areflected liquid jet stream (11) of the high pressure liquid jet stream(2) is reflected under an angle, wherein the angle is steeper ascompared to the inclination of a lower screen wall (7) disposed inclinedrelative to a travel advance direction (19) and is rising forwardly andwherein the reflected liquid jet stream (11) passes essentiallyimmediately to an exit opening (18) or that the reflected liquid jetstreams (11) are deflected under an angle, wherein the angle is equal toor flatter as compared to the inclination of the forwardly risingdisposed lower screen wall (7), wherein the reflected liquid jet streams(11) are captured and pass through the exit opening (18) at the surfaceof the lower screen wall (7).
 9. The groove cleaning unit according toclaim 8, wherein the lower screen wall (7) forms a discharge channel(20) with an upper stream wall (6) and side walls (13) disposed on twosides, wherein the discharge channel (20) ends in the exit opening (18),wherein the discharge channel (20) exhibits at the railtrack surface atleast the width of a railtrack groove (3) and exhibits upwardly thesame, or an increasing width.
 10. The groove cleaning unit according toclaim 8 wherein the high pressure jet nozzle (1) is at least in traveldirection (19) steeper or flatter inclined downwardly and adjustable indistance relative to the impingement location, depending on the kind andthe quantity of the dirt deposit (12) in the railtrack groove (3), therespective travel speed and the pressure of the high-pressure liquid jetstream (2) and wherein the high-pressure liquid jet stream (2) isdirected by the high pressure jet nozzle (1), as a flat jet stream witha width perpendicular to the direction of travel (19) and essentially isdelivered impinging over the width of the railtrack groove (3), whereinan angle of between 30 and 80 angular degrees is adjustable relative tothe surface of the railtrack (17).
 11. The groove cleaning unitaccording to claim 8 wherein the high-pressure jet nozzle (1) isadjustable perpendicular to the travel direction (19), sideways,perpendicular or steeper or flatter inclined, depending on the grooveshape, the kind and amount of the dirt deposit (12) in the railtrackgroove (3) in order to direct high-pressure fluid jet streams (2)preferably sideways at a side wall of the railtrack groove (3).
 12. Thegroove cleaning unit according to claim 8 wherein the exit opening (18)of the cover screen (5) leads into a collection trough (15), wherein thecollection trough forms at the same time a storage container or is thisfeeding part of a transport device (14), from which the dirt istransported with the cleaning liquid or a part of the cleaning liquidinto a dirt container, wherein the cleaning liquid with a mud partdischarges toward the outside from the dirt container or passes into astorage container.
 13. The groove cleaning unit according to claim 8wherein a collection trough (15) for the dirt cleaning liquid mixture isfurnished with an overflow (16) at least for the overwhelming part ofthe spent cleaning liquid part.
 14. The groove cleaning unit accordingto claim 8 wherein the groove cleaning unit is placed immediatelybetween wheel sets coordinated as close as possible to the groovecleaning unit or is placed directly in guide wheels running in thegroove and wherein a separate groove cleaning unit is provided for eachrailtrack groove (3) of a railtrack strand.
 15. A groove cleaning unitwith a high pressure jet nozzle from which a cleaning fluid impinges ina high pressure jet stream inclined downwardly onto a cleaning surfaceand is covered by a covering screen, wherein an exit opening for thedirt fluid mixture is placed in the cover screen, wherein the coverscreen (5) covers a piece of a railtrack (17) with a railtrack groove(3), wherein a high pressure jet nozzle (1) is placed in the region of afront wall (8) on the jet stream side, wherein a high pressure fluid jetstream (2) is directed onto an impingement location (4) in the railtrackgroove (3) by the high pressure jet nozzle (1), wherein a reflectedfluid jet stream (11) of the high pressure fluid jet stream (2) isreflected under an angle, wherein the angle is steeper as compared tothe inclination of a lower screen wall (7) disposed inclined relative toa travel advance direction (19) and is rising forwardly and wherein thereflected fluid jet stream (11) passes essentially immediately to anexit opening (18) or that the reflected fluid jet streams (11) aredeflected under an angle, wherein the angle is equal to or flatter ascompared to the inclination of the forwardly rising disposed lowerscreen wall (7), wherein the reflected fluid jet streams (11) arecaptured and pass through the exit opening (18) at the surface of thelower screen wall (7); wherein the lower screen wall (7) forms adischarge channel (20) with an upper stream wall (6) and side waits (13)disposed on two sides, wherein the discharge channel (20) ends in theexit opening (18), wherein the discharge channel (20) exhibits at therailtrack surface at least the width of a railtrack groove (3) andexhibits upwardly the same, or an increasing width; wherein the sidewalls (13) reach down up to the surface (24) of the railtrack (17) andto a surface of a leading edge (23) on two sides of the railtrack groove(3) and end with sealing beams (25,26), wherein a sealing beam (25) isthe disposed resting on a surface (22) of the railtrack (17) essentiallylaying on the surface (22) and wherein the sealing beam (26) is disposedresting on the surface (24) of the leading edge (23), in the case thehigh level distance between the surface (22) of the railtrack (17) andof the surface of the leading edge (23) exhibits the highest tolerancevalue, wherein the two sealing beams (25, 26) delimit the opening of thecover screen (5) sideways relative to the railtrack groove (3) andprotrude in the direction of travel (19), preferably on two sides. 16.The groove cleaning unit according to claim 15 wherein the lower screenwall (7), which preferably exhibits a planar course, is reaching down tothe surface of the processed railtrack (17) and ends in an edge (21)preferably nearly touching at least at a distance from the impingementpoint (4) of the high-pressure fluid jet streams, wherein the distancecorresponds at least approximately to the length of the railtrack groove(3) processed by the high-pressure fluid jet stream.
 17. The groovecleaning unit according to claim 15 wherein wherein the high pressureaqueous liquid jet stream (2) directed toward a dirt layer (12) in therailtrack groove (3) to be processed by the groove cleaning unit isarranged with an impingement angle relative to the railtrack surface offrom between 30 and 80 angular degrees relative to the surface of therailtrack (17), depending on the kind of the high pressure aqueousliquid jet stream (2), on the dirt in the dirt layer (12) of railtrackgrooves (3) and on a travel speed; wherein the high pressure aqueousliquid jet stream (2) directed by a groove cleaning unit onto the dirtdeposit (12) in the railtrack groove (3) to be processed is arrangedwith an impingement angle relative to the railtrack surface,perpendicular to a travel direction (19) of the carrier vehicle and thusessentially perpendicular to the longitudinal direction of the railtrackgroove (3), of between 90 and 30 angular degrees relative to the surfaceof the railtrack (17), directed against a side wall of the railtrackgroove (3), depending on the kind of the high pressure aqueous liquidjet stream (2), of the dirt in the dirt deposits (12) of the railtrackgroove (3).
 18. A groove cleaning unit with a high pressure jet nozzlefrom which a cleaning fluid impinges in a high pressure jet streaminclined downwardly onto a cleaning surface and is covered by a coveringscreen, wherein an exit opening for the dirt fluid mixture is placed inthe cover screen, wherein the cover screen (5) covers a piece of arailtrack (17) with a railtrack groove (3), wherein a high pressure jetnozzle (1) is placed in the region of a front wall (8) on the jet streamside, wherein a high pressure fluid jet stream (2) is directed onto animpingement location (4) in the railtrack groove (3) by the highpressure jet nozzle (1), wherein a reflected fluid jet stream (11) ofthe high pressure fluid jet stream (2) is reflected under an angle,wherein the angle is steeper as compared to the inclination of a lowerscreen wall (7) disposed inclined relative to a travel advance direction(19) and is rising forwardly and wherein the reflected fluid jet stream(11) passes essentially immediately to an exit opening (18) or that thereflected fluid jet streams (11) are deflected under an angle, whereinthe angle is equal to or flatter as compared to the inclination of theforwardly rising disposed lower screen wall (7), wherein the reflectedfluid jet streams (11) are captured and pass through the exit opening(18) at the surface of the lower screen wall (7); wherein the lowerscreen wall (7) forms a discharge channel (20) with an upper stream wall(6) and side walls (13) disposed on two sides, wherein the dischargechannel (20) ends in the exit opening (18), wherein the dischargechannel (20) exhibits at the railtrack surface at least the width of arailtrack groove (3) and exhibits upwardly the same, or an increasingwidth; wherein at least a sealing beam (25) resting on a surface (22) atthe railtrack (17) exhibits a steel plate several mm thick andexhibiting a thickness of from 10 to 50 min exhibits a profile with aplanar or bomb shaped lower sealing face (33) and exhibits a rectangularor square cross-section.
 19. A groove cleaning unit with a high pressurejet nozzle from which a cleaning fluid impinges in a high pressure jetstream inclined downwardly onto a cleaning surface and is covered by acovering screen, wherein an exit opening for the dirt fluid mixture isplaced in the cover screen, wherein the cover screen (5) covers a pieceof a railtrack (17) with a railtrack groove (3), wherein a high pressurejet nozzle (1) is placed in the region of a front wall (8) on the jetstream side, wherein a high pressure fluid jet stream (2) is directedonto an impingement location (4) in the railtrack groove (3) by the highpressure jet nozzle (1), wherein a reflected fluid jet stream (11) ofthe high pressure fluid jet stream (2) is reflected under an angle,wherein the angle is steeper as compared to the inclination of a lowerscreen wall (7) disposed inclined relative to a travel advance direction(19) and is rising forwardly and wherein the reflected fluid jet stream(11) passes essentially immediately to an exit opening (18) or that thereflected fluid jet streams (11) are deflected under an angle, whereinthe angle is equal to or flatter as compared to the inclination of theforwardly rising disposed lower screen wall (7), wherein the reflectedfluid jet streams (11) are captured and pass through the exit opening(18) at the surface of the lower screen wall (7); wherein at the sealingbeam (26), preferably however the two sealing beams (25, 26) aredisposed at the coordinated side wall (13) of the cover screen (5)shiftable in height level.
 20. A groove cleaning unit with a highpressure jet nozzle from which a cleaning fluid impinges in a highpressure jet stream inclined downwardly onto a cleaning surface and iscovered by a covering screen, wherein an exit opening for the dirt fluidmixture is placed in the cover screen, wherein the cover screen (5)covers a piece of a railtrack (17) with a railtrack groove (3), whereina high pressure jet nozzle (1) is placed in the region of a front wall(8) on the jet stream side, wherein a high pressure fluid jet stream (2)is directed onto an impingement location (4) in the railtrack groove (3)by the high pressure jet nozzle (1), wherein a reflected fluid jetstream (11) of the high pressure fluid jet stream (2) is reflected underan angle, wherein the angle is steeper as compared to the inclination ofa lower screen wall (7) disposed inclined relative to a travel advancedirection (19) and is rising forwardly and wherein the reflected fluidjet stream (11) passes essentially immediately to an exit opening (18)or that the reflected fluid jet streams (11) are deflected under anangle, wherein tie angle is equal to or flatter as compared to theinclination of the forwardly rising disposed lower screen wall (7),wherein the reflected fluid jet streams (11) are captured and passthrough the exit opening (18) at the surface of the lower screen wall(7); wherein a sealing beam (25) is disposed on a surface (22) of therailtrack (17), is furnished with a longitudinal bore hole (30), whereinthe longitudinal bore hole (30) is connected to a feed line for a fluidunder pressure and wherein the feed line ends with one or severallongitudinal slots (31) aligned in travel direction (19) or a pluralityof bore holes, opened downwardly and being in the lower disposed sealingface (33).
 21. A groove cleaning unit with a high pressure jet nozzlefrom which a cleaning fluid impinges in a high pressure jet streaminclined downwardly onto a cleaning surface and is covered by a coveringscreen, wherein an exit opening for the dirt fluid mixture is placed inthe cover screen, wherein the cover screen (5) covers a piece of arailtrack (17) with a railtrack groove (3), a sealing beam (25) restingon a surface (22) of a railtrack (17) essentially laying on the surface(22), wherein a high pressure jet nozzle (1) is placed in the region ofa front wall (8) on the jet stream side, wherein a high pressure fluidjet stream (2) is directed onto an impingement location (4) in therailtrack groove (3) by the high pressure jet nozzle (1), wherein areflected fluid jet stream (11) of the high pressure fluid jet stream(2) is reflected under an angle, wherein the angle is steeper ascompared to the inclination of a lower screen wall (7) disposed inclinedrelative to a travel advance direction (19) and is rising forwardly andwherein the reflected fluid jet stream (11) passes essentiallyimmediately to an exit opening (18) or that the reflected fluid jetstreams (11) are deflected under an angle, wherein the angle is equal toor flutter as compared to the inclination of the forwardly risingdisposed lower screen wall (7), wherein the reflected fluid jet streams(11) are captured and pass through the exit opening (18) at the surfaceof the lower screen wall (7); wherein a sealing brush (27) is disposedin a brush support (28), horizontally inserted, is disposed sidewaysoutside of the sealing beam (26), at the side of a leading edge (23),next to a side wall (13) in travel direction or, respectively, workingdirection (19), wherein the bristles (29) are aligned from top to bottomand scrubbingly end over an outer edge (23) of the leading edge (23) andexhibit a length, which amounts to a multiple, and at least a five foldof the largest allowable distance between the sealing beam (26) and thesurface (24) of the leading edge (53), wherein the sealing brush (27)covers the length of the sealing beam (26) in travel direction (19) andpreferably surpasses.
 22. The groove cleaning unit according to claim 21wherein bristles (29) of a brush (27) are made of plastic of a high wearresistance and or are reinforced with metal bristles, which metalbristles are preferably disposed in rows and disposed mixed.
 23. Agroove cleaning unit with a high pressure jet nozzle from which acleaning fluid impinges in a high pressure jet stream inclineddownwardly onto a cleaning surface and is covered by a covering screen,wherein an exit opening for the dirt fluid mixture is placed in thecover screen, wherein the cover screen (5) covers a piece of a railtrack(17) with a railtrack groove (3), wherein a high pressure jet nozzle (1)is placed in the region of a front wall (8) on the jet stream side,wherein a high pressure fluid jet stream (2) is directed onto animpingement location (4) in the railtrack groove (3) by the highpressure jet nozzle (1), wherein a reflected fluid jet stream (11) ofthe high pressure fluid jet stream (2) is reflected under an angle,wherein the angle is steeper as compared to the inclination of a lowerscreen wall (7) disposed inclined relative to a travel advance direction(19) and is rising forwardly and wherein the reflected fluid jet stream(11) passes essentially immediately to an exit opening (18) or that thereflected fluid jet streams (11) are deflected under an angle, whereinthe angle is equal to or flatter as compared to the inclination of theforwardly rising disposed lower screen wall (7), wherein the reflectedfluid jet streams (11) arc captured and pass through the exit opening(18) at the surface of the lower screen wall (7); wherein the lowerscreen wall (7), which preferably exhibits a planar course, is reachingdown to the surface of the processed railtrack (17) and ends in an edge(21) preferably nearly touching at least at a distance from theimpingement point (4) of the high-pressure fluid jet streams, whereinthe distance corresponds at least approximately to the length of therailtrack groove (3) processed by the high-pressure fluid jet stream;wherein a groove seal (9) is disposed operating from the edge (21)downwardly into the railtrack groove (3), which groove seal (9), forexample, protrudes into the railtrack groove (3), is made of a rigidmaterial, preferably hinged or of elastic or of material not resistingbending, of a wear resistant material, solidly attached or formed by asealing liquid jet stream.
 24. A groove cleaning unit with a highpressure jet nozzle from which a cleaning fluid impinges in a highpressure jet stream inclined downwardly onto a cleaning surface and iscovered by a covering screen, wherein an exit opening for the dirt fluidmixture is placed in the cover screen, wherein the cover screen (5)covers a piece of a railtrack (17) with a railtrack groove (3), whereina high pressure jet nozzle (1) is placed in the region of a front wall(8) on the jet stream side, wherein a high pressure fluid jet stream (2)is directed onto an impingement location (4) in the railtrack groove (3)by the high pressure jet nozzle (1), wherein a reflected fluid jetstream (11) of the high pressure fluid jet stream (2) is reflected underan angle, wherein the angle is steeper as compared to the inclination ofa lower screen wall (7) disposed inclined relative to a travel advancedirection (19) and is rising forwardly and wherein the reflected fluidjet stream (11) passes essentially immediately to an exit opening (18)or that the reflected fluid jet streams (11) are deflected under anangle, wherein the angle is equal to or flatter as compared to theinclination of the forwardly rising disposed lower screen wall (7),wherein the reflected fluid jet streams (11) are captured and passthrough the exit opening (18) at the surface of the lower screen wall(7); wherein the lower screen wall (7), which preferably exhibits aplanar course, is reaching down to the surface of the processedrailtrack (17) and ends in an edge (21) preferably nearly touching atleast at a distance from the impingement point (4) of the high-pressurefluid jet streams, wherein the distance corresponds at leastapproximately to the length of the railtrack groove (3) processed by thehigh-pressure fluid jet stream; wherein a groove covering (10) disposedrunning from the edge (21) forwardly in travel direction (19) andessentially sealingly resting on the surface of the railtrack (17) to beprocessed, wherein the length of the groove covering (10) corresponds toa multiple of the depth of the railtrack (3), in particular at theholding back of the cleaning fluid by the dirt deposits (12) adapted inthe railtrack groove (3).
 25. A groove cleaning unit with a highpressure jet nozzle from which a cleaning fluid impinges in a highpressure jet stream inclined downwardly onto a cleaning surface and iscovered by a covering screen, wherein an exit opening for the dirt fluidmixture is placed in the cover screen, wherein the cover screen (5)covers a piece of a railtrack (17) with a railtrack groove (3), whereina high pressure jet nozzle (1) is placed in the region of a front wall(8) on the jet stream side, wherein a high pressure fluid jet stream (2)is directed onto an impingement location (4) in the railtrack groove (3)by the high pressure jet nozzle (1), wherein a reflected fluid jetstream (11) of the high pressure fluid jet stream (2) is reflected underan angle, wherein the angle is steeper as compared to the inclination ofa lower screen wall (7) disposed inclined relative to a travel advancedirection (19) and is rising forwardly and wherein the reflected fluidjet stream (11) passes essentially immediately to an exit opening (18)or that the reflected fluid jet streams (11) are deflected under anangle, wherein the angle is equal to or flatter as compared to theinclination of the forwardly rising disposed lower screen wall (7),wherein the reflected fluid jet steams (11) are captured and passthrough the exit opening (18) at the surface of the lower screen wall(7); wherein a transport device (14) comprises a bucket chain, whereinthe buckets of the bucket chain at the lower half of the conveyor beltor chain, perpendicular to the travel direction (19) are attachedmovable through under the exit opening (18) of each groove cleaningunit.
 26. Groove cleaning unit comprising a high pressure jet nozzlefrom which an aqueous cleaning liquid impinges in a high pressure jetstream inclined downwardly onto a cleaning surface and is covered by acovering screen, wherein an exit opening for the dirt fluid mixture isplaced in the covering screen; side walls (13) reaching down up to thesurface (24) of the railtrack (17) and to a surface of a leading edge(23) on two sides of the railtrack groove (3) and end with sealing beams(25,26), wherein a sealing beam (25) is the disposed resting on asurface (22) of the railtrack (17) essentially laying on the surface(22) and wherein the sealing beam (26) is disposed resting on thesurface (24) of the leading edge (23), in the case the high leveldistance between the surface (22) of the railtrack (17) and of thesurface of the leading edge (23) exhibits the highest tolerance value,wherein the two sealing beams (25, 26) delimit the opening of the coverscreen (5) sideways relative to the railtrack groove (3) and protrude inthe direction of travel (19) on two sides.